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<h2>Compound Constraints (NUnit 2.4)</h2>

<p>Compound constraints are used to combine other constraints in various ways.

<table class="constraints">
<tr><th>Syntax Helper</th><th>Constructor</th><th>Operation</th></tr>
<tr><td>Is.Not...</td><td>NotConstraint( Constraint )</td><td>Negates or reverses the effect of a constraint</td></tr>
<tr><td>Is.All...</td><td>AllItemsConstraint( Constraint )</td><td>Tests that all members of a collection match the constraint</td></tr>
<tr><td>Constraint &amp; Constraint</td><td>AndConstraint( Constraint, Constraint )</td><td>Tests that both of the constraints are met</td></tr>
<tr><td>Constraint | Constraint</td><td>OrConstraint( Constraint, Constraint )</td><td>Tests that at least one of the constraints is met</td></tr>
</table>

<h4>Examples of Use</h4>

<div class="code"><pre>
Assert.That( 2 + 2, Is.Not.EqualTo( 5 );
Assert.That( new int[] { 1, 2, 3 }, Is.All.GreaterThan( 0 ) );
Assert.That( 2.3, Is.GreaterThan( 2.0 ) & Is.LessThan( 3.0 ) );
Assert.That( 3, Is.LessThan( 5 ) | Is.GreaterThan( 10 ) ); 

// Using inheritance
Expect( 2 + 2, Not.EqualTo( 5 ) );
Expect( 2.3, GreaterThan( 2.0 ) & LessThan( 3.0 ) );
</pre></div>
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